baber/WOPTO huggingface dataset:
Patent CA-2023663-C (CA)
Title: Process of forming phospate coatings on metal surfaces
Inventor: GEHMECKER HORST
IPC: C23C22/13
Filed: 1990-08-21
Granted: 1998-11-03
Abstract: A process of forming phosphate coatings on metal surfaces by a treatment with aqueous iron(II) and nitrate ions-containing zinc phosphate solutions can be carried out without a formation of waste water if metal surfaces are contacted with a phosphating solution which contains: 0.4 to 30 g/l Zn, 4 to 30 g/l P205, 5 to 50 g/l N03, from greater than 0 to 10 g/l Fe(II), and from greater than 0 to 0.3 g/l Fe(III) and in which the weight ratio of free P205 to total P2O5 = (0.04 to 0.50) : 1 and which is replenished with Zn, NO3 and P2O5 in a weight ratio of: Zn : NO3 : P205 = (0.80 to 0.30) : (0.17 to 0.4) : 1 and in which the Fe(II) content is adjusted only by an oxidation with nitrate or nitrite derived from nitrate, nitrite derived from nitrate, employed optionally together with an oxygen-containing gas,  H202  and/or  nitrous  gases,  the  phosphating bath  is succeeded by a cascade of at least two rinsing baths, low-salt water or salt-free water is fed to that rinsing bath which is the last in the direction of travel of the workpieces, the overflowing water is fed to the next preceding rinsing bath and to the phosphating bath, respectively, and low-salt or salt-free water is withdrawn from the phosphating bath at least at such a rate that the phosphate-enriched rinsing water form the cascade can be fed to the phosphating bath.
Patent CA-2025913-C (CA)
Inventor: SCHNEIDER ERIC J
IPC: G03G15/08
Filed: 1990-09-21
Granted: 1998-02-24
Abstract: An apparatus for developing a latent image recorded on a photoconductive member in an electrophotographic printing machine having a reservoir for storing a supply of developer material and a magnetic brush roll for transporting material from the reservoir to each of two donor rolls. The developer material comprises carrier granules and toner particles. The donor rolls receive toner particles from the magnetic brush roll and deliver the toner particles to the photoconductive member at spaced locations in the direction of movement of the photoconductive member to develop the latent image recorded thereon.
Patent CA-2027281-C (CA)
Title: Variable camshaft timing for internal combustion engine
Inventor: BUTTERFIELD ROGER P
IPC: F02B67/06
Filed: 1990-10-10
Granted: 2000-09-19
Abstract: A variable camshaft timing arrangement for an internal combustion engine in which a camshaft, for example, an intake valve operating camshaft in a dual camshaft engine, is advanced or retarded in its position relative to the crankshaft and to the exhaust valve operating camshaft in reaction to torque pulsations in such intake valve operating camshaft.      The camshaft has a sprocket oscillatingly mounted thereon, or on the other camshaft of a dual camshaft system. The camshaft carrying the oscillatingly mounted sprocket also has a bracket or another sprocket keyed thereto, and the bracket or other sprocket is chain driven by the rotation of the crankshaft. A pair of single acting hydraulic cylinders interconnect the oscillating sprocket and the bracket or other sprocket, with the piston ends of the cylinders pivotably attached to the oscillating sprocket and with the body ends of the cylinders pivotably attached to the other sprocket or bracket. The cylinders act in opposite directions and are hydraulically interconnected so that one extends as the other retracts and vice versa. The hydraulic system includes a control valve which is controlled by an engine controller to selectively permit one of the cylinders to extend, and the other to retract, in reaction to torque pulsations in the camshaft which is being advanced or retarded to provide desired engine operating characteristics. The camshaft which is being advanced or retarded can either be the camshaft which carries the oscillatingly mounted sprocket, or, in a dual camshaft system, it can be the other camshaft or both camshafts. In an engine having cam followers of the friction type, the unidirectionally acting torque on the camshaft which results from the friction between the camshaft and the followers can be offset by providing resilient means to act on one of the opposed cylinders to introduce a countertorque into the camshaft which is oppositely directed to the frictional torque.
Patent CA-2028652-C (CA)
Title: Support for an electrical box
Inventor: RINDERER ERIC R
IPC: H05K7/14
Filed: 1990-10-26
Granted: 1993-09-14
Abstract: SUPPORT FOR AN ELECTRICAL BOX          Abstract of the Disclosure A support for an electrical box, comprising a bar to be mounted between two spaced-apart wall studs or the like.  The bar comprises an elongate web of sheet metal forming a front face of the bar and having side edges extending  lengthwise of  the bar,  a pair of flanges extending rearwardly from the side edges of the web, and a forwardly-opening, generally U-shaped channel formed in the web running substantially the full length of the web between the side edges of the web.  The channel has spaced apart side walls extending rearwardly from the front face of the web, a bottom wall connecting the side walls and forming the bottom of the channel, and pilot holes spaced along the bottom wall of the channel at relatively closely spaced and regular intervals whereby an electrical box may be attached to the bar in a selected position lengthwise of the bar by placing the back wall of the box flush against the front face of the web over the channel and then fastening the box to the bar by using fasteners threaded through selected pilot boles in the bottom wall of the channel.
Patent CA-2032084-C (CA)
Title: Transformerless power monitor circuit having means for electronically latching dc alarms
Inventor: KIDO TORU
IPC: G06F1/30
Filed: 1990-12-12
Granted: 1994-03-22
Abstract: ABSTRACT OF THE DISCLOSURE     In a power monitor circuit, AC power-line voltage is converted by a DC power supply to a regulated DC voltage. The DC power supply shuts down itself in the event of a failure therein. The output of DC supply rises from zero to a specified value in slow response to power-on state and drops to zero in slow response to a significant drop in the AC voltage. A rectifier-filter converts the AC voltage to a nonregulated DC voltage. The output of the rectifier-filter rises in quick response to the power-on state and drops in quick response to the significant AC voltage drop. If the output of DC power supply drops below a specified threshold due to AC power-line failure or due to its own failure, a DC low-voltage signal is generated. If the output of rectifier-filter rises above a specified low level a first AC transitory signal is generated and if it drops below a specified high level a second AC transitory signal is generated. A latch circuit is energized with the nonregulated DC voltage to latch the DC low-voltage signal if it occurs during the interval between the first and second AC transitory signals and supplies a DC alarm signal to computer circuitry. A power controller is energized with the regulated DC voltage to supply control signals to the computer circuitry in response to the first and second AC transistory signals.
Patent CA-2042048-C (CA)
Title: Method and apparatus for laying pipe
Inventor: AKESAKA TOSHIO
IPC: F16L1/036
Filed: 1991-01-28
Granted: 1994-07-26
Abstract: ABSTRACT      First and second frame assemblies (18, 20) respectively provided with a pair of plate-like earth-retaining means (24, 36) are alternately advanced by drive means (22).  While the first and second frame assembies are alternately advanced, the ground (14) is excavated so as to form a channel (16).  A reaction force acting on the first frame assembly (18) when the second frame assembly (20) is advanced and a reaction force acting on the second frame assembly (20) when the first frame assembly (18) is advanced are respectively transmitted to the ground defining the channel by the action of first and second position maintaining means (32, 52).  When the first and second frame assemblies (18, 20) are advanced by required distances, a new pipe (12) is placed in the channel and connected to a pipe (12) already installed.
Patent CA-2044951-C (CA)
Title: Automatic gain control circuit
Inventor: TAKENAKA SHINYA
IPC: H03G3/30
Filed: 1991-06-19
Granted: 1996-01-16
Abstract: An automatic gain control  (AGC)  circuit for use in an optical code reader which eliminates error caused when regular reflecting light is directly incident on the detector element of the optical code reader.   The AGC has a variable gain amplifier which receives a signal from the detection element and outputs a signal to a peak-holding circuit.  The output from the peak-holding circuit is used to control the gain of the variable gain amplifier.  A reset circuit resets the output of the peak-holding circuit either when the output reaches a predetermined  level,  or  at  regular  intervals  during  the operation of the optical code reader.   The output of the variable gain amplifier is fed to a binary circuit.
Patent CA-2046726-C (CA)
Title: Temperature measuring device
Inventor: JONES BARBARA LYNN
IPC: G01K11/14
Filed: 1991-07-10
Granted: 1996-06-11
Abstract: A temperature measuring device comprises a light emitter, a nitrogen-containing diamond sensor, a light receiver, and lengths of fibre optics which connect the light emitter and the light receiver to the diamond sensor.  The diamond sensor has a base through which the emitted and reflected light pass and sloping surfaces which lead to an apex. The amount of light which is absorbed by the diamond sensor will vary according to the temperature in which the diamond sensor is placed.
Patent CA-2050105-C (CA)
Title: Tempering ring design
Inventor: CLAASSEN GEORGE R
IPC: C03B35/20
Filed: 1991-08-28
Granted: 1996-05-28
Abstract: Apparatus for handling a hot glass sheet during conveyance from a hot atmosphere to a cold atmosphere comprising a ring-like member having an upper surface engaging a glass sheet outline that consists essentially of a phenolic resin reinforced with fibers composed of an aromatic polyamid composition and a support ring attached to the ring-like member in facing relation to the ring-like member and sufficiently smaller in dimensions than those of the ring-like member to permit the ring-like member to interpose between the support ring and a supported edge of a glass sheet so as to provide thermal insulation as well as shielding between the metal support rings and the edge of the glass sheet.
Patent CA-2052053-C (CA)
Title: Heated nozzle for plastic injection and manufacturing method therefor
Inventor: OKAMURA ISAO
IPC: B29C45/27
Filed: 1991-09-23
Granted: 1995-01-24
Abstract: The heat of a heater sheath wire is both the heat that is directly transmitted to a heated nozzle main body, and the heat that is indirectly transmitted to the heated  nozzle  main  body  via  a  metal  strip  and  both provide  the  effect  of  efficiently  heating  the  heated nozzle main body and producing a significant increase in the performance.  The heated nozzle for plastic injection molding according to the present invention is configured so  as  to have  a  spiral-shaped  groove  on  its  outer periphery, the heater sheath wire that is pressed into the  spiral-shaped groove and  the metal  strip that  is wound around the surface of the outer periphery of the heated  nozzle main body and  is welded  to  the  heated nozzle main body.
Patent CA-2053064-C (CA)
Title: Dynamic bit allocation subband excited transform coding method and apparatus
Inventor: MAZOR BARUCH
IPC: H04B1/66
Filed: 1991-10-09
Granted: 2002-12-10
Abstract: In an adaptive subband excited transform speech encoding system, a range of quantizers are available and are dynamically selected for each window of speech. The quantizers designated for individual subbands are determined to minimize mean squared error distortion in the recreated signal while using no more than a predetermined number of quantization bits per window of speech.
Patent CA-2055466-C (CA)
Title: Method and apparatus for monitoring an ac transmission line
Inventor: HOFFMAN GARY R
IPC: H02H7/26
Filed: 1990-05-04
Granted: 2001-04-03
Abstract: The invention is directed to an improved method and apparatus for monitoring  the status of an AC electrical transmission line (101; 102, 103) connected betweeen first and second locations. In a disclosed embodiment of the method of the invention, first signal parameter values are generated, for the first location, by time  integrating between zero-crossings of an AC signal parameter measured at the first location. Second signal parameter values are  generated, for the second location, by time integrating between zero-crossings of the AC signal parameter measured at the second location. A stared first signal parameter value is read out, the read-out value being associated with a time that is a predetermined  time prior to the time at which a second parameter value is received at the first location. An indication of the status of the transmission line is then produced as a function of the second signal parameter value received at the first location and the read-ou t first signal parameter value.
Patent CA-2059172-C (CA)
Inventor: BIRD RAYMOND F
IPC: H04L12/22
Filed: 1992-01-10
Granted: 1996-01-16
Abstract: A arrangement of authenticating communications network users and means for carrying out the arrangement:  A first challenge N1 is transmitted from a first user A to a second user B.  In response to the first challenge, B generates and transmits a first response to the challenge and second challenge N2 to A.  A verifies that the first response is correct.  A then generates and transmits a second response to the second challenge to B, where the second response is verified.  The first response must be of a minimum form S1 and S2 are shared secrets between A and B.  S1 may or may not equal to S2.  In addition, f() and g() are selected such that the equation f'(S1,N1'....) = g(S2.N2) cannot be solved for N1' without knowledge of S1 and S2. f'() and N1' represent expressions on a second reference connection.  Preferably, the function f() may include the direction D1 of flow of the message containing f(), as in f(S1, N1, D1,...). In such a case, f() is selected such that the equation f'(S, N1',D1',...) = f(S, N2, D1,...) cannot be solved for N1' without knowledge of S1 and S2.  In this equation, D1' is the flow direction indicator of the message containing f'() on the reference connection.            Specific protocols satisfying this condition are protected from so-called intercept attacks.
Patent CA-2059463-C (CA)
Title: Twin-flow beater mill for preparing fibrous materials
Inventor: PALLMANN WILHELM
IPC: D21D1/32
Filed: 1992-01-16
Granted: 1995-07-04
Abstract: The invention relates to a twin-flow beater mill for preparing  fibrous  materials  to  produce  intermediate products capable of further processing. It consists of a rotor  fitted  with  beater  plates  surrounded  by  a cylindrical grinding surface.  The rotor includes rotor plates which carry the beater plates and which form a guide duct, shaped like an annular disk, which opens out peripherally onto the center of the grinding surface. The beater plates are interrupted on the inlet side in the opening-out region of the guide duct, and on the outlet side replaceable retaining rings can be set on the two end faces of the grinding surface so as to variably adjust the classifying effect.
Patent CA-2062385-C (CA)
Title: Sealing member for ink container portion and recording head employing the same
Inventor: GOTO AKIRA
IPC: B41J2/165
Filed: 1992-03-06
Granted: 1997-12-30
Abstract: An adhesive sheet-type sealing member is suitably used for protecting ink-ejecting nozzles or a communication hole of an ink-jet recording head during transportation or storage.  The sealing member exhibits a yield point at a load of not more than 1 kgf/cm for a specimen of 10 mm wide at a stress rate of 200 mm/min ~10% according to JIS-K-7113 and/or exhibits a folding load of not more than 0.10 g/cm for a specimen of 10 mm wide with a free length of 10 mm from the end of a specimen holder measured on the center of an electronic balance placed at a position 5 mm apart from the end of the specimen holder.
Patent CA-2066545-C (CA)
Title: Sending text messages to pagers
Inventor: FERNANDEZ JORGE DAMASO
IPC: H04W88/18
Filed: 1992-04-21
Granted: 1995-08-15
Abstract: A paging device sends text messages to pagers via paging services observing different communication protocols. Communication data is stored in random access memory and includes a service file identifying telephone numbers and protocols associated with each paging services and a pager file containing pager identification codes. Operator message creation and automatic transmission occur contemporaneously, coordinated with status fields in message records. Each newly-created message is stored in a queue together with control data identifying a paging service and pager and status data indicating a "pending" status, namely, a requirement for transmission of the message. The automatic transmission involves repeated scanning of the queue for pending messages, programming a modem according to the message's control data, and arranging transmission to the relevant service. The status of messages subject to transmission errors is automatically set to "rejected". The operator can retrieve any message from queue, setting its status from rejected to pending to reinitiate transmission or from pending to cancelled to suppress transmission. Communication data can also be transmitted to and received from an identical device in a remote service center, to allow correction of faulty communication data or reconfiguration to meet user requirements.
Patent CA-2074954-C (CA)
Inventor: WANG KJETIL
IPC: E21B47/00
Filed: 1991-12-03
Granted: 2005-02-08
Abstract: Device for the assembly, resp. disassembly of probes (31) into process pipes, tanks (34), etc., comprising a nipple (25) mounted to the wall (36) of the pipe or tank (34), a ball valve (24) mounted to the nipple (25) and an hydraulically activated cylinder (2) which, for example, may be operated by using a pump. Its cylinder is connected to the ball valve (24), as the cylinder (2) is provided with a piston device (3) attached to the pump (23) through a first attachment (19) for the inflow and outflow of hydraulic fluids for pressure balancing within the cylinder (2) in order to bring the probe (31) into the nipple (25), through the ball valve (24) to the cylinder (2). The piston rod (5) is constructed so that it may be fastened to an attachment (32) on the probe (31). A second attachment (21) for outflow and inflow of hydraulic fluid being mounted to the cylinder wall (15) on the opposite side of the piston device (3) in the first attachment (19), also in order to bring the probe (31) out of the nipple (25), through the ball valve (24) and to the cylinder (2).
Patent CA-2076822-C (CA)
Title: Cycle up convergence of electrostatics in a tri-level imaging apparatus
Inventor: HURWITCH CARL B
IPC: G03G15/01
Filed: 1992-08-25
Granted: 1999-08-03
Abstract: Cycle up convergence of electrostatics in a tri-level imaging apparatus is shortened through the use of an image output terminal (IOT) resident image (on a pixel or control board) to obtain charge, discharge and background voltage readings on every pitch
Patent CA-2083305-C (CA)
Title: Pharmaceutical compositions for oral use and method of preparing them
Inventor: MAKINO TADASHI
IPC: A61K9/00
Filed: 1992-11-19
Granted: 2003-12-09
Abstract: A pharmaceutical composition for oral use comprising an effective amount of a compound of the formula (I) having antagonistic action to angiotensin II   (see formula I) (wherein the ring W is an optionally substituted N-containing heterocyclic residue; R3 is a group capable of forming an anion or a group convertible thereinto; X is a direct bond or a spacer having an atomic length of two or less between the phenylene group and the phenyl group; and n is an integer of 1 or 2) and an oleaginous substance having a lower melting point, and a method for preparing a pharmaceutical composition for oral use comprising an effective amount of a compound of the formula (I) and an oleaginous substance having a lower melting point, which comprises admixing the compound of the formula (I) with an oleaginous substance having a lower melting point and then subjecting the mixture to molding.
Patent CA-2087401-C (CA)
Title: Process for preparing non-hydroxypropylated deflavored, crosslinked, pregelatinized, starch and product
Inventor: KATCHER JAY H
IPC: A23L1/0522
Filed: 1993-01-15
Granted: 2004-03-30
Abstract: Starch is alkali treated, washed to remove flavor, crosslinked, neutralized, gelatinized and treated with an emulsifying agent to give instant starch useful for instant puddings and mixes.
Patent CA-2089616-C (CA)
Title: Engine and radiator coolant treatment and handling, enabling coolant reuse
Inventor: DIXON PATRICK L
IPC: B08B9/027
Filed: 1993-02-16
Granted: 2002-07-30
Abstract: The method of treating used liquid coolant employed in the coolant passages of an engine or radiator, and employing a coolant pumping structure, that includes providing a source of supply coolant liquid, and a used coolant reservoir; operating the pumping structure to displace supply coolant liquid from the source into the coolant passages, thereby displacing used coolant from the passages for flow into the reservoir structure; and chemically treating the used coolant liquid to remove metallic and other contaminants therefrom, thereby to produce treated coolant liquid usable as the supply coolant liquid.
Patent CA-2092538-C (CA)
Title: Integrated circuit systems and method for analog signal recording and playback
Inventor: BLYTH TREVOR
IPC: G11C27/02
Filed: 1991-09-25
Granted: 2001-10-23
Abstract: Integrated circuit system and method for analog signal recording and playback having improved performance and a very high level of in-tegration. The integrated circuit is complete with preamplifier, automat-ic gain control, filter, fixed references including a band cap reference, trimming, power output amplifier, memory array, multiple closed loop sample and hold circuits, column decoder, column driver, row decoder, address counters, master oscillator and chip function timing circuits in-cluding sample clock, charge pumps, high voltage regulator and wa-veshapers, low VCC detector, power-on reset and recording reference circuits on a single chip. The chip is configurable for use of the filter as an antialiasing input filter, as an output smoothing filter or to cut out the filter, preamplifier and/or the output power filter, and for special test modes including mass programming patterns.
Patent CA-2097983-C (CA)
Inventor: GJESTLAND HAAVARD
IPC: C22C1/02
Filed: 1993-06-08
Granted: 1999-05-04
Abstract: Procedure for the production of a thixotropic magnesium alloy by adding a grain refiner combined with controlled,  rapid solidification with subsequent heating to the two-phase area. It is preferable to use a solidification rate of > 1°C/s , preferably >10°C/s. It is essential that the solidification takes place at such a speed that growth of dendrites  is avoided. Heating to the two-phase area is carried out rapidly in 1-30 minutes, preferably 2-5 minutes. By heating an alloy comprising  2-8 weight % Zn, 1.5-5 weight % RE, 0.2-0.8 weight % Zr balanced with magnesium to a temperature in the two-phase area after casting, the structure will assume a form in which the .alpha.-phase is globular (RE = rare earth metal). The size of the spheres will be dependent on the temperature and the holding time at that temperature and they will be surrounded by a low-smelting matrix. It is preferable that the alloy has a grain size of < 100µm, preferably 50-100 µm. A grain-refined magnesium alloy comprising 6-12 weight % Al, 0-4 weight % Zn and 0-0.3 weight % Mn also assumes thixotropic properties when heated to the two-phase area. Grain refiners such as Zr or carbon-based agents such as, for example, wax/fluorspar/ carbon powder or calcium cyanamide can be used,  depending on the alloy.